| /* |
| * Copyright (C) 2006-2020 Apple Inc. All rights reserved. |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #pragma once |
| |
| #include "APICast.h" |
| #include "Error.h" |
| #include "ExceptionHelpers.h" |
| #include "JSCallbackFunction.h" |
| #include "JSClassRef.h" |
| #include "JSFunction.h" |
| #include "JSGlobalObject.h" |
| #include "JSLock.h" |
| #include "JSObjectRef.h" |
| #include "JSString.h" |
| #include "OpaqueJSString.h" |
| #include "PropertyNameArray.h" |
| #include <wtf/Vector.h> |
| |
| namespace JSC { |
| |
| template <class Parent> |
| inline JSCallbackObject<Parent>* JSCallbackObject<Parent>::asCallbackObject(JSValue value) |
| { |
| ASSERT(asObject(value)->inherits(value.getObject()->vm(), info())); |
| return jsCast<JSCallbackObject*>(asObject(value)); |
| } |
| |
| template <class Parent> |
| inline JSCallbackObject<Parent>* JSCallbackObject<Parent>::asCallbackObject(EncodedJSValue encodedValue) |
| { |
| JSValue value = JSValue::decode(encodedValue); |
| ASSERT(asObject(value)->inherits(value.getObject()->vm(), info())); |
| return jsCast<JSCallbackObject*>(asObject(value)); |
| } |
| |
| template <class Parent> |
| JSCallbackObject<Parent>::JSCallbackObject(JSGlobalObject* globalObject, Structure* structure, JSClassRef jsClass, void* data) |
| : Parent(getVM(globalObject), structure) |
| , m_callbackObjectData(makeUnique<JSCallbackObjectData>(data, jsClass)) |
| { |
| } |
| |
| // Global object constructor. |
| // FIXME: Move this into a separate JSGlobalCallbackObject class derived from this one. |
| template <class Parent> |
| JSCallbackObject<Parent>::JSCallbackObject(VM& vm, JSClassRef jsClass, Structure* structure) |
| : Parent(vm, structure) |
| , m_callbackObjectData(makeUnique<JSCallbackObjectData>(nullptr, jsClass)) |
| { |
| } |
| |
| template <class Parent> |
| JSCallbackObject<Parent>::~JSCallbackObject() |
| { |
| VM& vm = this->HeapCell::vm(); |
| vm.currentlyDestructingCallbackObject = this; |
| ASSERT(m_classInfo); |
| vm.currentlyDestructingCallbackObjectClassInfo = m_classInfo; |
| JSObjectRef thisRef = toRef(static_cast<JSObject*>(this)); |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectFinalizeCallback finalize = jsClass->finalize) |
| finalize(thisRef); |
| } |
| vm.currentlyDestructingCallbackObject = nullptr; |
| vm.currentlyDestructingCallbackObjectClassInfo = nullptr; |
| } |
| |
| template <class Parent> |
| void JSCallbackObject<Parent>::finishCreation(JSGlobalObject* globalObject) |
| { |
| VM& vm = getVM(globalObject); |
| Base::finishCreation(vm); |
| ASSERT(Parent::inherits(vm, info())); |
| init(globalObject); |
| } |
| |
| // This is just for Global object, so we can assume that Base::finishCreation is JSGlobalObject::finishCreation. |
| template <class Parent> |
| void JSCallbackObject<Parent>::finishCreation(VM& vm) |
| { |
| ASSERT(Parent::inherits(vm, info())); |
| ASSERT(Parent::isGlobalObject()); |
| Base::finishCreation(vm); |
| init(jsCast<JSGlobalObject*>(this)); |
| } |
| |
| template <class Parent> |
| void JSCallbackObject<Parent>::init(JSGlobalObject* globalObject) |
| { |
| ASSERT(globalObject); |
| VM& vm = getVM(globalObject); |
| |
| bool hasConvertToType = false; |
| Vector<JSObjectInitializeCallback, 16> initRoutines; |
| JSClassRef jsClass = classRef(); |
| do { |
| if (jsClass->convertToType) |
| hasConvertToType = true; |
| if (JSObjectInitializeCallback initialize = jsClass->initialize) |
| initRoutines.append(initialize); |
| } while ((jsClass = jsClass->parentClass)); |
| |
| if (hasConvertToType) { |
| this->putDirect(vm, vm.propertyNames->toPrimitiveSymbol, |
| JSFunction::create(vm, globalObject, 1, "[Symbol.toPrimitive]"_s, customToPrimitive), |
| static_cast<unsigned>(PropertyAttribute::DontEnum)); |
| } |
| |
| // initialize from base to derived |
| for (int i = static_cast<int>(initRoutines.size()) - 1; i >= 0; i--) { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| JSObjectInitializeCallback initialize = initRoutines[i]; |
| initialize(toRef(globalObject), toRef(jsCast<JSObject*>(this))); |
| } |
| |
| m_classInfo = this->classInfo(getVM(globalObject)); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::getOwnPropertySlot(JSObject* object, JSGlobalObject* globalObject, PropertyName propertyName, PropertySlot& slot) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); |
| JSContextRef ctx = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| if (StringImpl* name = propertyName.uid()) { |
| unsigned attributes = PropertyAttribute::ReadOnly | PropertyAttribute::DontEnum; |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| // optional optimization to bypass getProperty in cases when we only need to know if the property exists |
| if (JSObjectHasPropertyCallback hasProperty = jsClass->hasProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(name); |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| if (hasProperty(ctx, thisRef, propertyNameRef.get())) { |
| slot.setCustom(thisObject, attributes, getCallbackGetter()); |
| return true; |
| } |
| } else if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(name); |
| JSValueRef exception = nullptr; |
| JSValueRef value; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| value = getProperty(ctx, thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| slot.setValue(thisObject, attributes, jsUndefined()); |
| return true; |
| } |
| if (value) { |
| slot.setValue(thisObject, attributes, toJS(globalObject, value)); |
| return true; |
| } |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| if (staticValues->contains(name)) { |
| JSValue value = thisObject->getStaticValue(globalObject, propertyName); |
| RETURN_IF_EXCEPTION(scope, false); |
| if (value) { |
| slot.setValue(thisObject, attributes, value); |
| return true; |
| } |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| if (staticFunctions->contains(name)) { |
| slot.setCustom(thisObject, attributes, getStaticFunctionGetter()); |
| return true; |
| } |
| } |
| } |
| } |
| |
| bool found = Parent::getOwnPropertySlot(thisObject, globalObject, propertyName, slot); |
| RETURN_IF_EXCEPTION(scope, false); |
| if (found) |
| return true; |
| |
| if (propertyName.uid() == vm.propertyNames->toStringTagSymbol.impl()) { |
| String className = thisObject->classRef()->className(); |
| if (className.isEmpty()) |
| className = thisObject->className(vm); |
| slot.setValue(thisObject, static_cast<unsigned>(PropertyAttribute::DontEnum), jsString(vm, WTFMove(className))); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::getOwnPropertySlotByIndex(JSObject* object, JSGlobalObject* globalObject, unsigned propertyName, PropertySlot& slot) |
| { |
| VM& vm = getVM(globalObject); |
| return object->methodTable(vm)->getOwnPropertySlot(object, globalObject, Identifier::from(vm, propertyName), slot); |
| } |
| |
| template <class Parent> |
| EncodedJSValue JSCallbackObject<Parent>::customToPrimitive(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsDynamicCast<JSCallbackObject*>(vm, callFrame->thisValue()); |
| if (!thisObject) |
| return throwVMTypeError(globalObject, scope, "JSCallbackObject[Symbol.toPrimitive] method called on incompatible |this| value."_s); |
| PreferredPrimitiveType hint = toPreferredPrimitiveType(globalObject, callFrame->argument(0)); |
| RETURN_IF_EXCEPTION(scope, { }); |
| |
| JSContextRef ctx = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<const JSObject*>(thisObject)); |
| ::JSType jsHint = hint == PreferString ? kJSTypeString : kJSTypeNumber; |
| |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) { |
| JSValueRef exception = nullptr; |
| JSValueRef result = convertToType(ctx, thisRef, jsHint, &exception); |
| if (exception) |
| return throwVMError(globalObject, scope, toJS(globalObject, exception)); |
| if (result) { |
| JSValue jsResult = toJS(globalObject, result); |
| if (UNLIKELY(jsResult.isObject())) |
| return JSValue::encode(asObject(jsResult)->ordinaryToPrimitive(globalObject, hint)); |
| return JSValue::encode(jsResult); |
| } |
| } |
| } |
| |
| RELEASE_AND_RETURN(scope, JSValue::encode(thisObject->ordinaryToPrimitive(globalObject, hint))); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::put(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, JSValue value, PutPropertySlot& slot) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| JSContextRef ctx = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| JSValueRef valueRef = toRef(globalObject, value); |
| |
| if (UNLIKELY(isThisValueAltered(slot, thisObject))) |
| RELEASE_AND_RETURN(scope, Parent::put(thisObject, globalObject, propertyName, value, slot)); |
| |
| if (StringImpl* name = propertyName.uid()) { |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(name); |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| if (result || exception) |
| return result; |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| if (StaticValueEntry* entry = staticValues->get(name)) { |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return false; |
| if (JSObjectSetPropertyCallback setProperty = entry->setProperty) { |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = setProperty(ctx, thisRef, entry->propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| if (result || exception) |
| return result; |
| } |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(name)) { |
| PropertySlot getSlot(thisObject, PropertySlot::InternalMethodType::VMInquiry, &vm); |
| bool found = Parent::getOwnPropertySlot(thisObject, globalObject, propertyName, getSlot); |
| RETURN_IF_EXCEPTION(scope, false); |
| getSlot.disallowVMEntry.reset(); |
| if (found) |
| RELEASE_AND_RETURN(scope, Parent::put(thisObject, globalObject, propertyName, value, slot)); |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return false; |
| return thisObject->JSCallbackObject<Parent>::putDirect(vm, propertyName, value); // put as override property |
| } |
| } |
| } |
| } |
| |
| RELEASE_AND_RETURN(scope, Parent::put(thisObject, globalObject, propertyName, value, slot)); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::putByIndex(JSCell* cell, JSGlobalObject* globalObject, unsigned propertyIndex, JSValue value, bool shouldThrow) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| JSContextRef ctx = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| JSValueRef valueRef = toRef(globalObject, value); |
| Identifier propertyName = Identifier::from(vm, propertyIndex); |
| |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(propertyName.impl()); |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| if (result || exception) |
| return result; |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| if (StaticValueEntry* entry = staticValues->get(propertyName.impl())) { |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return false; |
| if (JSObjectSetPropertyCallback setProperty = entry->setProperty) { |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = setProperty(ctx, thisRef, entry->propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| if (result || exception) |
| return result; |
| } |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.impl())) { |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return false; |
| break; |
| } |
| } |
| } |
| |
| RELEASE_AND_RETURN(scope, Parent::putByIndex(thisObject, globalObject, propertyIndex, value, shouldThrow)); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::deleteProperty(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, DeletePropertySlot& slot) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| JSContextRef ctx = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| if (StringImpl* name = propertyName.uid()) { |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectDeletePropertyCallback deleteProperty = jsClass->deleteProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(name); |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = deleteProperty(ctx, thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| if (result || exception) |
| return true; |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| if (StaticValueEntry* entry = staticValues->get(name)) { |
| if (entry->attributes & kJSPropertyAttributeDontDelete) |
| return false; |
| return true; |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(name)) { |
| if (entry->attributes & kJSPropertyAttributeDontDelete) |
| return false; |
| return true; |
| } |
| } |
| } |
| } |
| |
| static_assert(std::is_final_v<JSCallbackObject<Parent>>, "Ensure no derived classes have custom deletePropertyByIndex implementation"); |
| if (std::optional<uint32_t> index = parseIndex(propertyName)) |
| RELEASE_AND_RETURN(scope, Parent::deletePropertyByIndex(thisObject, globalObject, index.value())); |
| RELEASE_AND_RETURN(scope, Parent::deleteProperty(thisObject, globalObject, propertyName, slot)); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::deletePropertyByIndex(JSCell* cell, JSGlobalObject* globalObject, unsigned propertyName) |
| { |
| VM& vm = getVM(globalObject); |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| return JSCell::deleteProperty(thisObject, globalObject, Identifier::from(vm, propertyName)); |
| } |
| |
| template <class Parent> |
| CallData JSCallbackObject<Parent>::getConstructData(JSCell* cell) |
| { |
| CallData constructData; |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (jsClass->callAsConstructor) { |
| constructData.type = CallData::Type::Native; |
| constructData.native.function = getConstructFunction(); |
| break; |
| } |
| } |
| return constructData; |
| } |
| |
| template <class Parent> |
| EncodedJSValue JSCallbackObject<Parent>::constructImpl(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObject* constructor = callFrame->jsCallee(); |
| JSContextRef execRef = toRef(globalObject); |
| JSObjectRef constructorRef = toRef(constructor); |
| |
| for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(constructor)->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectCallAsConstructorCallback callAsConstructor = jsClass->callAsConstructor) { |
| size_t argumentCount = callFrame->argumentCount(); |
| Vector<JSValueRef, 16> arguments; |
| arguments.reserveInitialCapacity(argumentCount); |
| for (size_t i = 0; i < argumentCount; ++i) |
| arguments.uncheckedAppend(toRef(globalObject, callFrame->uncheckedArgument(i))); |
| JSValueRef exception = nullptr; |
| JSObject* result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = toJS(callAsConstructor(execRef, constructorRef, argumentCount, arguments.data(), &exception)); |
| } |
| if (exception) { |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| return JSValue::encode(jsUndefined()); |
| } |
| return JSValue::encode(result); |
| } |
| } |
| |
| RELEASE_ASSERT_NOT_REACHED(); // getConstructData should prevent us from reaching here |
| return JSValue::encode(JSValue()); |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::customHasInstance(JSObject* object, JSGlobalObject* globalObject, JSValue value) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); |
| JSContextRef execRef = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectHasInstanceCallback hasInstance = jsClass->hasInstance) { |
| JSValueRef valueRef = toRef(globalObject, value); |
| JSValueRef exception = nullptr; |
| bool result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = hasInstance(execRef, thisRef, valueRef, &exception); |
| } |
| if (exception) |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| return result; |
| } |
| } |
| return false; |
| } |
| |
| template <class Parent> |
| CallData JSCallbackObject<Parent>::getCallData(JSCell* cell) |
| { |
| CallData callData; |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (jsClass->callAsFunction) { |
| callData.type = CallData::Type::Native; |
| callData.native.function = getCallFunction(); |
| break; |
| } |
| } |
| return callData; |
| } |
| |
| template <class Parent> |
| EncodedJSValue JSCallbackObject<Parent>::callImpl(JSGlobalObject* globalObject, CallFrame* callFrame) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSContextRef execRef = toRef(globalObject); |
| JSObjectRef functionRef = toRef(callFrame->jsCallee()); |
| JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(callFrame->thisValue().toThis(globalObject, ECMAMode::sloppy()))); |
| |
| for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(toJS(functionRef))->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectCallAsFunctionCallback callAsFunction = jsClass->callAsFunction) { |
| size_t argumentCount = callFrame->argumentCount(); |
| Vector<JSValueRef, 16> arguments; |
| arguments.reserveInitialCapacity(argumentCount); |
| for (size_t i = 0; i < argumentCount; ++i) |
| arguments.uncheckedAppend(toRef(globalObject, callFrame->uncheckedArgument(i))); |
| JSValueRef exception = nullptr; |
| JSValue result; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| result = toJS(globalObject, callAsFunction(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception)); |
| } |
| if (exception) { |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| return JSValue::encode(jsUndefined()); |
| } |
| return JSValue::encode(result); |
| } |
| } |
| |
| RELEASE_ASSERT_NOT_REACHED(); // getCallData should prevent us from reaching here |
| return JSValue::encode(JSValue()); |
| } |
| |
| template <class Parent> |
| void JSCallbackObject<Parent>::getOwnSpecialPropertyNames(JSObject* object, JSGlobalObject* globalObject, PropertyNameArray& propertyNames, DontEnumPropertiesMode mode) |
| { |
| VM& vm = getVM(globalObject); |
| JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); |
| JSContextRef execRef = toRef(globalObject); |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObject)); |
| |
| for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectGetPropertyNamesCallback getPropertyNames = jsClass->getPropertyNames) { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| getPropertyNames(execRef, thisRef, toRef(&propertyNames)); |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| typedef OpaqueJSClassStaticValuesTable::const_iterator iterator; |
| iterator end = staticValues->end(); |
| for (iterator it = staticValues->begin(); it != end; ++it) { |
| StringImpl* name = it->key.get(); |
| StaticValueEntry* entry = it->value.get(); |
| if (entry->getProperty && (mode == DontEnumPropertiesMode::Include || !(entry->attributes & kJSPropertyAttributeDontEnum))) { |
| ASSERT(!name->isSymbol()); |
| propertyNames.add(Identifier::fromString(vm, String(name))); |
| } |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| typedef OpaqueJSClassStaticFunctionsTable::const_iterator iterator; |
| iterator end = staticFunctions->end(); |
| for (iterator it = staticFunctions->begin(); it != end; ++it) { |
| StringImpl* name = it->key.get(); |
| StaticFunctionEntry* entry = it->value.get(); |
| if (mode == DontEnumPropertiesMode::Include || !(entry->attributes & kJSPropertyAttributeDontEnum)) { |
| ASSERT(!name->isSymbol()); |
| propertyNames.add(Identifier::fromString(vm, String(name))); |
| } |
| } |
| } |
| } |
| } |
| |
| template <class Parent> |
| void JSCallbackObject<Parent>::setPrivate(void* data) |
| { |
| m_callbackObjectData->privateData = data; |
| } |
| |
| template <class Parent> |
| void* JSCallbackObject<Parent>::getPrivate() |
| { |
| return m_callbackObjectData->privateData; |
| } |
| |
| template <class Parent> |
| bool JSCallbackObject<Parent>::inherits(JSClassRef c) const |
| { |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (jsClass == c) |
| return true; |
| } |
| return false; |
| } |
| |
| template <class Parent> |
| JSValue JSCallbackObject<Parent>::getStaticValue(JSGlobalObject* globalObject, PropertyName propertyName) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(this)); |
| |
| if (StringImpl* name = propertyName.uid()) { |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(globalObject)) { |
| if (StaticValueEntry* entry = staticValues->get(name)) { |
| if (JSObjectGetPropertyCallback getProperty = entry->getProperty) { |
| JSValueRef exception = nullptr; |
| JSValueRef value; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| value = getProperty(toRef(globalObject), thisRef, entry->propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| return jsUndefined(); |
| } |
| if (value) |
| return toJS(globalObject, value); |
| } |
| } |
| } |
| } |
| } |
| |
| return JSValue(); |
| } |
| |
| template <class Parent> |
| EncodedJSValue JSCallbackObject<Parent>::staticFunctionGetterImpl(JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName propertyName) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObj = asCallbackObject(thisValue); |
| |
| // Check for cached or override property. |
| PropertySlot slot2(thisObj, PropertySlot::InternalMethodType::VMInquiry, &vm); |
| bool found = Parent::getOwnPropertySlot(thisObj, globalObject, propertyName, slot2); |
| RETURN_IF_EXCEPTION(scope, { }); |
| slot2.disallowVMEntry.reset(); |
| if (found) |
| return JSValue::encode(slot2.getValue(globalObject, propertyName)); |
| |
| if (StringImpl* name = propertyName.uid()) { |
| for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(globalObject)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(name)) { |
| if (JSObjectCallAsFunctionCallback callAsFunction = entry->callAsFunction) { |
| JSObject* o = JSCallbackFunction::create(vm, thisObj->globalObject(vm), callAsFunction, name); |
| thisObj->putDirect(vm, propertyName, o, entry->attributes); |
| return JSValue::encode(o); |
| } |
| } |
| } |
| } |
| } |
| |
| return JSValue::encode(throwException(globalObject, scope, createReferenceError(globalObject, "Static function property defined with NULL callAsFunction callback."_s))); |
| } |
| |
| template <class Parent> |
| EncodedJSValue JSCallbackObject<Parent>::callbackGetterImpl(JSGlobalObject* globalObject, EncodedJSValue thisValue, PropertyName propertyName) |
| { |
| VM& vm = getVM(globalObject); |
| auto scope = DECLARE_THROW_SCOPE(vm); |
| |
| JSCallbackObject* thisObj = asCallbackObject(thisValue); |
| |
| JSObjectRef thisRef = toRef(jsCast<JSObject*>(thisObj)); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| if (StringImpl* name = propertyName.uid()) { |
| for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::tryCreate(name); |
| JSValueRef exception = nullptr; |
| JSValueRef value; |
| { |
| JSLock::DropAllLocks dropAllLocks(globalObject); |
| value = getProperty(toRef(globalObject), thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| throwException(globalObject, scope, toJS(globalObject, exception)); |
| return JSValue::encode(jsUndefined()); |
| } |
| if (value) |
| return JSValue::encode(toJS(globalObject, value)); |
| } |
| } |
| } |
| |
| return JSValue::encode(throwException(globalObject, scope, createReferenceError(globalObject, "hasProperty callback returned true for a property that doesn't exist."_s))); |
| } |
| |
| } // namespace JSC |
